Water Neck, Billet Aluminium Thermostat Housing, For Nissan & Holden RB30, RB25, Polished Silver
Proflow's RB billet aluminium thermostat housing is designed to to suit Nissan RB20, RB25 and RB30 engines, replacing the factory thermostat housing completely.
It also features a -16AN ORB thread so you can run custom braided hose. Supplied with replacement gaskets and bolts.
